Topological optimum shape of a fundamental module of the periodic structure and cantilever bridge
Topological optimum shape of a fundamental module of the periodic structure and cantilever bridge
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周期结构及悬臂桥基本模块的拓扑优化形状
DOI：
10.11532/structcivil.67a.90
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
中沢正利・近広雄希・有尾一郎
中科院分区：
文献类型：
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作者：
谷 春葉;鎌田 敏郎;寺澤 広基;服部 晋一;中沢正利・近広雄希・有尾一郎
本文旨在寻找一种基本模块的最佳配置，该模块可以在自然灾害发生时组装成临时桥梁，以快速保障交通生命线。在验证周期结构的最优构型也具有周期性后，以三跨连续梁隔离简支梁的最优构型作为基本模块进行搜索。结合荷载位置和支承位置进行了参数化分析，提出了两种类型的原型。此外，还研究了悬臂桥的最优结构与解析域和支承条件的关系，并与福斯铁路桥进行了类比。
This paper aims to find out the optimum configuration of a fundamental mod-ule which can be assembled into the temporary bridge to secure the traffic lifeline rapidly, when the natural disaster ocurries. After verification that the optimum configuration of periodic structure becomes also periodic, the opti-mum configuration of simply supported beam isolated from 3-span continuous beam is searched as a fundamental module. The parametric analysis with com-bination of load position and support position are carried out, and two types of prototype can be proposed. Moreover, the optimum configuration of cantilever bridge is also investigated with relation to the analytical domain and support conditions, and the analogy with Forth railway bridge is recognized.